Repeating firearm.



G.-SWEBILIUS & H. T. H. HANITZ.

REPEATING FIREARM.

APPLICATION FILED 0CT.25,

Patented July 14, 1914.

6 SHEETS-SHEBTL 5 Mme W601 J @EEJEEF O. G. SWBBILIUS & H. T. R. HANITZ.

RBPBATING FIREARM. APPLICATION IILBD 00125, 1913.

PatentedJuly 14, 1914 m 0; m5 m my 6 a O. G. SWEBiLIUS & H. T. R.HANITZ.

REPEATING FIREARM.

APPLICATION FILED 001225, 1913 Patented July 14, 1914.

6 FHEETS-SHEET 3 1 G1 SEA/E5141 H13 G. G. SWEBILIUS & H. T. R. HANITZ.

' REPEATING FIREARM.

APPLICATION FILED 00125, 1913.

1,103,22 Patehfid July 14, 191

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REPEATING FIREARM.

APPLICATION-FILED 0c1'.25,191s.

6 SHEETS-SHEET 5.

Patented July 14, 1914.

'wi/bnw/w MM la 7 G. G. SWEBILIUS & H. T. R. HANITZ.

REPEATING FIREARM,

APPLICATION FILED OGT.25,1913. 111 @3328, Patented July 14,1914

6 SHEETSSIIEET 8.

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CARL GUSTAF SWEBILIUS 'AND HANS T. R. HANITZ, OF NEW HAVEN, CONNECTICUT,ASSIGNORS TO THE MARLIN FIREARMS COMPANY, OF NEW HAVE-N, CONNECTICUT,

A CORPORATION OF CONNECTICUT.

rvnrnarruc FIREARM.

mosses.

Specification of Letters Patent.

Patented July 14, rate.

Application filed October 25, 1913. Serial No. 797,201.

county, State of Connecticut, have invented certain new and usefulImprovements in Repeating Firearms, of which the following is a full,clear, and exact description.

Our invention relates to'improvements in repeating fire arms of theso-called magazine type and the object, broadly, is to provide thereincertain new and useful improve ments which aim toward simplicity anddurability of construction.

In the accompanying drawings, Figure 1 is, in the main, a centrallongitudinal section of the breech portion of the fire arm, showing thevarious operating parts in side elevation. Figs. 2, 3 and 4 are, in themain, similar views showing the parts in different Fig. 5 is ahorizontal longitudinal section through the breech and box magazine.Figs. 6 and 7 are similar views showing other parts. Figs. 8, 9 and aredifferent views of the combined breech block and locking bolt andassociated parts. Fig. 11 is apcrspective view of the combined breechblock and locking bolt. Fig. 12 is. a perspective view of a lock-upslide. Fig. 12 is ,a view of the opposite side of the parts ous ways.The principal parts comprise the barrel, receiver, guard, breech block,locking bolt, loclcup slide,- bolt operating cam, action rod, safetylatch, hammer, sear,

trigger and safety mechanism.

1 is a receiver.

2 is a barrel.

3 is a stock.

4 is a slide action rod positioned and guided at the under side of thebarrel, and entering the front end of the receiver 1.

b is a combined breech block and locking 0 t.

6 is what We term a lock-up slide as sociated with said locking bolt andoperated by the action rod so as to impart a reciprocal movement to thecombined locking bolt and breech block to insert and extract thecartridge, and so as to tilt the said part into locking position whenthe gun is ready to be fired.

7 is a lock-up shoulder in the top wall of the receiver against whichthe combined breech block and locking bolt engages when the gun is readyto be fired, as in Fig. 2.

8 is a concealed swinging hammer having a hooked latching end.

9 is a trigger having a cooperating latching end arranged to engage thelatching end of the hammer when the breech block is re tracted and torelease the hammer when the trigger is pulled. The hammer and thetrigger are provided with the usual springs as shown.

10 is a firing pin spring pressed as usual and carried by the breechblock.

11 is a safety latch. A

12 is a box magazine for cartridges 1 8-13, which are arranged to standin said magazine as shown in Fig. 17.

14 is a sear having a locking shoulder and arranged to coact with ashoulder on the hammer when the parts stand in the position shown inFig. 4.

15 is a cam for the lock-up slide 6 and the combined breech block andlocking bolt 5. The lock-up slide 6 lies in a recess in one side of thebreechblock 5, its outer edge being guided in a horizontal groove in theside wall of the receiver. The cam is pivotally mounted at 16 in theside of the lock-up slide and comprises an upwardly projecting shoulder17 lying in a vertical notch. in the side of the breech block as shownin several views. The lower part of the cam is formed with two arms18-49 which, in turn, provide a recess between them to receive ashoulder 20 at the rear end of the action rod located just in rear ofthe side notch 21-therein. (See Fig. 13).

22 is a spring detent arranged to engage in a notch in slide 6 to holdthe cam 15 in the position shown in Fig. 3 should the acindicator andwill later be described.

proper position to receive said rod when it is reinserted. 24 1s anexposed safety device whlch is accessible on the forward upper side ofthe stock and by the operation of which the trig ger may be locked toprevent the accidental discharge of the gun. This also acts as an Withthis general description of parts, we

- may now. describe briefly how the" mechabreech block fully advanced.and locked up,-

nism operates and also describe more in de-.

tail specific features of construction incidental to the various mainfeatures and which contribute to the operation of such" features; Fig. 1shows the breech block fully retracted engaging a cartridge ready topush it into the barrel. Fig. 2 shows the the gun, being ready to befired. Fig. 3 shows the position of the parts when the gun has beenfired, the empty shell being shown in the barrel. Fig. 4t'ShOWsthebreech block again retracted with the empty shell be-' ingdischarged. Starting again with 1.: In this position the breech blockhas been forced into its extremerearward position by the rearwardmovement ofthe action rod 1 against cam 15; the rearward movement ofthebreech block has overcooked the hammei 8. There is an inclined rib- 25on the under side of the said breech block, which rib 25' inclinesupwardly and is shown in Fig. 1'

as engaging 'a cartridge with the shoulder 26 formed thereby, (Fig.11).- This shoulder is also useful as a cammingtslfouldeii to assist inopening the breech block ..nil pa tracting a discharge shellasheroinatter described. When the parts are in the position shown inFig. 1, it will.be seen'that a stud 27 carried by the hammer 8 isengaging with and tensioning a spring 28 having one end supported by thereceiver and having its other end fixed in the rear end of the safetylatch 11, and which, when the hammer is in the forward position, tendsto lift the rear end as shown in Fig. 3. WVhen, how- ,The

ment a cartridgeis picked up and forced into the chamber; the rib 25passes beyond the hammer 8 and the latter ascends first to the positionshown in Fig. t where it is engaged by the hammer sear 14: and heldthereby until the gun is fully locked. When the. action rod has pulledthe breech block into its forward position, the said rod acts on the cam15 and pulls the lock-up slide 6 ahead. This forward movement of thelock-up slide relatively to the breechblock' 5 operates to tilt thebreech block up into the locking position shown in Fig. 2. So also whenthe action rod has nearly reached the limit of its forward excursiomthenose 29 at the for-. ward end of the safety latch 11 swings up under theinfluence of the spring 28 which is still depressed by the hammer .8. Onswinging up, the nose 29 enters-a notch 45% on the under side of theaction rod, whereby the continued forward movement of the ac-' tion rodpulls the safety latch lhahead slightly. The rear end of the safetylatch 11 is offset/and rests in rear of the ofi'set upper end of sear 14(see Figs. 5, 14: and 15), so that this forward sliding movement willmove thesear to disengage the hub ofthe hammer and allow the latter tomove slightly. ahead from the position indicated in Fig. 4-; to thatindicated in Fig. 2, wherein the hooked end of the hammer will engagethe hooked end of the triggeigthe trigger then being the -only means forholding the hammeragainst advancing. The gun is now ready to be fired.,When the trigger is pulled, the hammer advances and strikes the firingpin 10 discharging the 'cartridge, .whereupon the parts will assume theposition shown in Fig. 3. 'In this figure,- it will be seen that thespring 28 has been released by the hammer stud 27 and has assumed itsnormal position shown .in Fig 3, whereinthe' spring tends to lift therear end of the -safety latch .11 so as to free the nose 29 from theaction rod, whereby tlfe action rod, may be retracted. Previously tothis tilting movement and. the advance. of the hammer, it is obviousthat the action rod is held in its forward position shown in Fig. 2 bythe moves in a short slot in the'frame to permit but also a'limitedsliding movement.

Now returning to theparts-as shown in the safety slide to have not onlya 'tiltiligf.

Fi 3: A rearward movement of the action rod 4; will engage the cam 15and tiltlit in a directionto move the lock-u slide 6 rearwardlyrelatively tothe breec block. -This movement causes. the breech block tobe tilted down into the horizontal position so as to become free fromthe lock-up shoulder 7 as will be more fully explained. On this tilt ingdown movement the breech block fulcrums on the forward end of thereceiver,

clined shoulder 35.

the point of the shoulder 26 constituting a fulcrum of a long lever sopowerful as to readily extractthe discharged shell, even though thelatter may stick in the chamber of the barrel. It, will also be observedthat directly below the shoulder 26 or fulcrum point, there is arearwardly extending shoulder 31 on the interior of the receiver 1,which operates as a ledge to support the forward end of the breech blockand relieve any danger of the accumulation of gases above the breechblock, blowing the forward end of 'ecch block downwardly.

The lock-up slide is associated with the breech block so as to impartthe tilting movement thereto as follows. At the rear end of the lock-upslide is a lateral offset 32. On the forward side of this lateral offset32 is provided an inclined wedge surface 33, this wedge surface beingdesigned to engage a corresponding incfine 34 on the rear under side ofthe breech block. Directly forward of the incline 3% is an obliquerecess in the side of the breech block forming an in- 36 is an inclineon the inner side of the lock-up slide 6 opposite to shown in Figs. 6and 7;

the wedge surface 33. This incline 36 is arranged to coact with theincline 35 on the breech block. As the lock-up slide moves forwardlyrelatively to the breech block, the incline 33 on the former, engagingthe incline 34: on the latter, elevates the rear end of the breech blockand forces it up to the locking position. When the lock-up slide movesrearwardly relatively to the breech block, the incline 36 engages theincline 35 on the breech block and pulls the rear end of the breechblock down out of the locking position. Thus it is that the breech blockis moved into and out of the locking position. It is desirable when thebreech block is in the lower or unlocked position and is beingreciprocated to and fro that said breech block and lock-up slide shouldbe locked together so that the wedge incline 33 may not tend to lift therear of the breech block against the top of the receiver and cause abinding action. Hence, we provide a bolt 37, the inner end of which isarranged to project into a bolt hole 38 in the side of the lock-up slide6. This is best it will be noted that the bolt is normally springpressed outward so that its locking nose will normally stand in theposition shown in Fig. 6, wherein the outer end of the bolt stands inthe ejector opening. W'hen, however, the breech block is movedrearwardly, this bolt engages with the inner wall of the receiver asshown in Fig. 7 and is pressed in so that its locking end will enter thebolt hole 38, for when this occurs,-the lock-up slide will be pulledback from the posifiion indicated in Fig. 6 to that indicated in Fig. 7.When When the bolt 37 clears the wall of the re' ceivcr on such forwardmovement, the spring of the bolt frees the lock-up slide so that thewedge 33 thereof may move the breech-bolt upwardly against the shoulder7. On the rear movement of the breech block incidental to thewithdrawing of the empty cartridge shell, the said shell is ejected inthe usual manner and the hammer is recocked as before, and is againengaged by the hammer sear 14 which is moved to the hammer ongagingposition by a spring 39. The trigger safety and indicator 24: has alever 40 pivot-ed intermediate its ends, the lower end engaging in abolt 41. The forward end of the bolt 41 is arranged to engage a notch inthe rear end of the trigger when the trigger stands in the positionshown in Figs. 2, d and 16, or in the position in which the hammer iscooked (Fig. 2) thereby locking the trigger (see Fig. 16) until theindicator.

is shifted to move bolt 41. When, however, the hammer has descended tothe position shown in Fig. 3, the trigger will tilt down slightly sothat the notch stands just below the end of the bolt 41, and in aposition where the adjacent end of the trigger will block anysubstantiallocking movement of bolt 41. Hence, the device 2 not only constitutestrigger safety butalso an indicator to show whether the hammer is downand whether it is safe to attempt to pull the trigger. If the triggersafety 24; cannot be freely moved, it shows that the hammer is notcooked, and that there would be no danger in pulling the trigger for anypurpose.

It is obvious that under certain conditions it might be desirable todisengage the safety latch 11 from the rod, for example, for the purposeof permitting a cartridge to be withdrawn from the chamber of the barrelwithout allowing the hammer to descend. In other words, to unload thegun without firing it. To that end we provide an extension ll on thelower side of the latch 11 which projects through a somewhat elongatedslot in the lower part of the receiver, as seen in Figs. 1 to Jr. Thisslot is sufli cicntly long to permit the latch ll to freely partake ofits horizontal movement before described. Assuming the gun is loaded andthe parts are in the position indicated in Fig. 2, it is obvious thatwithout the provision of this manual release for the lever as an emptyshell.

cartridge 13 withoutpermitting the hammer 8 to descend, he may merelypress up on the extension 11, thus freeing the nose 29 from the actionrod 4r by withdrawing it from the notch 4 This permits the action rod tobe moved back to unlock the breech block and move the latter backward inthe same manner as is observed in withdrawing the empty shell. Thisbackward movement withdraws the loaded cartridge 13, permitting it to beejected through the side opening the same Obviously, in the un-- loadingof the gun, the magazine 12 would naturally first be removed so thatanother cartridge would not be fed into place. This means for releasingthe action rod may be also employed when it is desired to withdraw theaction rod 4 from the receiver in the event it is desired to unscrew thebarrel 2 from the receiver; for example, as described in United StatesLetters Patent No. 1,083,708 of January 6, 1914, which relates to atake-down gun in which the barrel 2 is removable from the receiver: 1 bya relative rotation of the parts. i

back of the It will be observed that the box magazine 12 has a notch 12which furnishes a clearance for the rib 25 on the under side of thebreech block so that the forward end of said rib, namely, the nose 26,may readily. pass through to engage the uppermost cartridge 13 in theact of loading the gun.

What we claim is: x

1.- In a repeating firearm, a receiver, a vertically and longitudinallymovable breechblock, a longitudinally movable lock-up slide guided onboth sides of the receiver and adapted to force said breech-block eitherinto or out of engagement with the lock-up shoulder oflthe receiver, areciprocating ac tion rod, and a breech-block operating cam' adapted toconvey the movement of the action rod to the breech-block and the-l'ock-' up slide.

2. In a repeating firearm, a receiver, a ver tically and longitudinallymovable breechblock, a longitudinally movable lock-up slide guided onboth sides of the receiver and adapted to force said breech-block eitherinto .or out of engagement with the lock-up shoulder of the receiver, areciprocating action rod, and a breech-blockoperating cam adapted toconvey the movement of the action rod to'the breech-block and lock'upslide, carried by said lock-up slide.

3. In a repeating firearm, a receiver, a vertically and longitudinallymovable hreechblock, a longitudinally movable loch-up slide, abreech-block operating cam, and a locking mean's carried bythebreech-block adapted to rigidly lock breech-block and locloup slidetogether when the breech-block is out oi'engagement with the lock-upshoulder in the receiver and starts on its rearward travel.

4. In a repeating firearm, a receiver, a longitudinally'movable tiltingbreech-block, a longitudinally movable lock-up slide, a

breech-block operating can], and a reciproeating action-rod adapted toengage with the cam for either opening or closing the gun and having alimited free movement independently of said cam to securely lock thelatter, against movement while the breech is locked.

' 5 In arepeating firearm, a receiver, a'c tion-mechanism thereinincluding a breechblock arranged for both longitudinal and tiltingmovement, a lock-up slide associated therewith and arranged forlongitudinal movement only. relatively to the receiver and relatively-tothe breech-block, a recipr0cating action rod, with operative means ofconnection between the same and said slide and breech-block, aspring-pressed hammer, a spring-pressed trigger, a spring-pressed sear,and a spring-pressed safety latch cooperating with said sear andalsowith said action rod.

6; In a repeating firearm, a receiver, action mechanism thereinincluding a breechblock arranged for both longitudinal and tiltingmovement, a lock-up slide associated pressed hammer, a spring-pressedtrigger, a spring-pressed sear, and a spring-pressed safety latchcoiiperating with said sear and also with said action rod, with meansfor v manually disengaging said safety latch from said rod at will.

7. In a repeating firearm, a receiver, action mechanism therein,including a reciproeating action rod, a hammer, a scar for said hammer,a safety latch having an intermediate fulcrum, said latch having alimited tilting and a limited longitudinal movement, one end of saidlatch engaging the soar to operate the latter, the other end engagingthe action rod to be operated thereby and also to lock said rod, aspring normally acting to tilt said latch in a direction to disengagethe rod, and means for moving said spring in a direction to reverse thetilting movement on the latch when the gun is cocked. I l

8. In a repeating firearm,'a receiver, ac-

tionmechanism therein including a brecclr block and locking bolt,a'reciprocating ac ton rod, a hammer, a scar, a safety latch, a fulcrumfor the latter arranged intermediate its ends, said safety latch havingboth a limited sliding movement and a limited tilting movement, one endoi said latch operatively engaging said sear, the other end operativelyengaging said rod, and a spring i ernimli- Mich having both :ment and alimited I, one end of sziicl latch 0p- (g said sear, PM they endoperativeiy engaging said, rod, a spring 1101'- nmliv tilting said latchin a diredtwn to dis- Q 1mm id rod, said hammer c0- ,ting with midspring when cocked to said spring to exert a tenson on said in directionto cause said latch i0 Q 116 rod, said iaich copemting with 0d when thelatter is advanced and tha gun is i cked and the hammer is cocked toimid th rod against rearward movement until said hzmuner descends, and amanually opombic means for disengaging said safety latch from saidaction rod While the hammer is cocked.

CARL GUSTAF SWEBILIUS. HANS T. R. HANITZ. Witnesses:

CLIF om) B. FNALKER, JOHN F. MQRAN.

ca use latch

